US3881841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damped compressor bearing mounting assembly
Assignee: Avco Corp
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Filing: 1973-11-29
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Granted: 1975-05-06
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Expires: 1993-11-29
Abstract
Abstract A hydrostatically damped bearing for a compressor rotor is mounted relative to a compressor inlet housing by inner and outer sleeves receiving the outer race of the bearing assembly. The sleeves have flanges at one end which sandwich a first shim that sets the proper clearance for the outer race of the bearing to permit hydrostatic damping. A second shim coaxial with and outward from the first shim enables the bearing assembly to be positioned relative to the compressor inlet housing, thus adjusting the clearance of the compressor rotor relative to its shroud.
Inventors
- 👤 Salvatore Straniti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:34
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/05; F04D29/056; F04D29/059; F01; F01D; F01D25/00; F01D25/16; F01D25/162; F01D25/164; F16; F16C; F16C27/00; F16C27/04; F16C27/045; F16C35/00; F16C35/04; F16C35/06; F16C35/07; F16C35/077; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C2360/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
210 words
In a compressor comprising: an annular outer housing; a rotor assembly including a bladed hub, said housing having a portion defining an annular shroud for said hub; a bearing mounting assembly comprising: an inner race secured over said rotor assembly and an outer race; an outer sleeve receiving the outer race of said bearing, said outer sleeve having an inwardly directed lip defining a first axial face and an outer extending flange; an inner sleeve telescoped into said outer sleeve and having an end defining a second axial face, said inner sleeve having an outwardly extending flange adjacent the flange on said outer sleeve, said outer race being positioned between said first and second faces; the improvement comprising: an assembly for mounting said outer race of said bearing, said assembly including a first annular shim positioned between said flanges, said shim having a given axial thickness for positioning said outer race in said assembly with a predetermined clearance between said first and second axial faces in said assembly, and a second annular shim also having a given axial thickness coaxial with said first shim for positioning said bearing mounting assembly in a predetermined axial position relative to said housing thereby maintaining a predetermined clearance between said shroud and said hub.
Claim 2
Dependent Claim
210 words
In a compressor comprising: an annular outer housing; a rotor assembly including a bladed hub, said housing having a portion defining an annular shroud for said hub; a bearing mounting assembly comprising: an inner race secured over said rotor assembly and an outer race; an outer sleeve receiving the outer race of said bearing, said outer sleeve having an inwardly directed lip defining a first axial face and an outer extending flange; an inner sleeve telescoped into said outer sleeve and having an end defining a second axial face, said inner sleeve having an outwardly extending flange adjacent the flange on said outer sleeve, said outer race being positioned between said first and second faces; the improvement comprising: an assembly for mounting said outer race of said bearing, said assembly including a first annular shim positioned between said flanges, said shim having a given axial thickness for positioning said outer race in said assembly with a predetermined clearance between said first and second axial faces in said assembly, and a second annular shim also having a given axial thickness coaxial with said first shim for positioning said bearing mounting assembly in a predetermined axial position relative to said housing thereby maintaining a predetermined clearance between said shroud and said hub.
Claim 3
Dependent Claim
39 words
Apparatus as in claim 1 wherein the flange on said inner sleeve projects outward beyond the flange on said outer sleeve and wherein the outer annular shim is positioned between said flange and an annular face in said housing.
Claim 4
Dependent Claim
55 words
Apparatus as in claim 2 wherein said housing has an elongated bore extending from its annular face for receiving said bearing assembly and wherein the flanges on said inner and outer sleeves are positioned at one end thereof so that the outer race of said bearing assembly is telescoped into the bore in said housing.
Claim 5
Dependent Claim
43 words
Apparatus as in claim 1 wherein said bearing mounting assembly includes passages for supply of lubricating fluid to the outer race of said bearing for hydrostatic damping, and said apparatus further comprises a conduit for connecting lubricating fluid to said bearing mounting assembly.
Claim 6
Dependent Claim
53 words
Apparatus as in claim 4 wherein said inner sleeve has an annular outer facing recess extending to its end face adjacent the outer race of said bearing and a passageway extending from said annular recess to an inlet positioned on said outer extending flange thereby forming the passages in said bearing mounting assembly.
Claim 7
Dependent Claim
97 words
Apparatus as in claim 1 wherein: said outer housing has a bore extending from an axial end face and an annular recess adjacent the radially inward portion of said axial face; said inner and outer fLanges are positioned at one end of said sleeves thereby permitting said sleeves to be telescoped into said bore, the flange on said outer sleeve being received in said annular recess and the flange on said inner sleeve projecting outward beyond the flange on said outer sleeve and adjacent the axial face on said housing to position the outer annular shim therebetween.
Claim 8
Dependent Claim
168 words
Apparatus as in claim 6 wherein: the flange on said inner sleeve and said first annular shim has a ring of aligned through holes; the flange on said outer sleeve has a plurality of threaded holes aligned with a first set of the holes in the flange on said inner sleeve and said first annular shim and a plurality of clearance passageways aligned with a second set of the aligned holes in the flange on said inner sleeve and said first annular shim; the annular recess in said housing has a series of threaded bores aligned with the second set of aligned holes in the flange on said inner sleeve and the first annular shim; said apparatus further comprises a series of bolts extending through said aligned holes, certain of said bolts being threaded into the flange on said outer sleeve for holding said sleeves together and the other bolts being threaded into the threaded bores in said annular housing for holding said sleeves relative to said housing.
Claim 9
Dependent Claim
58 words
Apparatus as in claim 7 wherein all of said bolts are the same length and said annular recess has a plurality of bores aligned with the aligned holes in the flange on said inner sleeve and said first annular shim for providing clearance relative to the bolts that have been threaded into said flange on the outer sleeve.
Claim 10
Dependent Claim
21 words
Apparatus as in claim 8 wherein said first and second set of aligned holes alternate around the periphery of said flanges.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |